Diffusion in colocation contact networks: the impact of nodal spatiotemporal dynamics

Thomas, Bryce, Jurdak, Raja, Zhao, Kun, and Atkinson, Ian (2016) Diffusion in colocation contact networks: the impact of nodal spatiotemporal dynamics. PLoS ONE, 11 (8). e0152624. pp. 1-21.

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Temporal contact networks are studied to understand dynamic spreading phenomena such as communicable diseases or information dissemination. To establish how spatiotemporal dynamics of nodes impact spreading potential in colocation contact networks, we propose "inducement-shuffling" null models which break one or more correlations between times, locations and nodes. By reconfiguring the time and/or location of each node's presence in the network, these models induce alternative sets of colocation events giving rise to contact networks with varying spreading potential. This enables second-order causal reasoning about how correlations in nodes' spatiotemporal preferences not only lead to a given contact network but ultimately influence the network's spreading potential. We find the correlation between nodes and times to be the greatest impediment to spreading, while the correlation between times and locations slightly catalyzes spreading. Under each of the presented null models we measure both the number of contacts and infection prevalence as a function of time, with the surprising finding that the two have no direct causality.

Item ID: 46096
Item Type: Article (Research - C1)
ISSN: 1932-6203
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© 2016 Thomas et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funders: Australian Postgraduate Award (APA), Commonwealth Scientific Industrial and Research Organisation (CSIRO), James Cook University (JCU)
Date Deposited: 12 Oct 2016 07:43
FoR Codes: 40 ENGINEERING > 4006 Communications engineering > 400699 Communications engineering not elsewhere classified @ 50%
46 INFORMATION AND COMPUTING SCIENCES > 4601 Applied computing > 460106 Spatial data and applications @ 50%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8999 Other Information and Communication Services > 899999 Information and Communication Services not elsewhere classified @ 34%
97 EXPANDING KNOWLEDGE > 970108 Expanding Knowledge in the Information and Computing Sciences @ 33%
97 EXPANDING KNOWLEDGE > 970110 Expanding Knowledge in Technology @ 33%
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